Attachment 0003 -- CM-523U Purchase Description Rev B.doc

TEMOD-20-01

Distribution Statement A

TEMOD-20-01

Revision: B 28 September 2021

PURCHASE DESCRIPTION

FOR THE

ANALYZER, SPECTRUM:

CM-523/U

Prepared by:

Product Director, Test, Measurement, and Diagnostic Equipment

Bldg 3651, Army TACMS Drive Redstone Arsenal, Alabama 35898-5000

Distribution Statement A: Approved for public release; distribution is unlimited.

1.0 GENERAL INFORMATION.

This procurement requires a battery operated, handheld spectrum analyzer which will meet the general purpose functional test requirements to measure signal spectrum across a myriad of communication and weapon systems. It will be required to deliver the measurement capability to accurately measure input signals at ranges between 9 kilohertz (kHz) and 26.5 Gigahertz (GHz) in support of Army avionic, missile, ordnance, and signal equipment.

1.1 Acquisition Process.

Product Director Test, Measurement, and Diagnostic Equipment (PD TMDE) will be utilizing a Best Value with Bid Samples acquisition process. This procurement will result in a firm-fixed-price, multiple year, indefinite delivery – indefinite quantity contract.

NOTE: This is not a solicitation and does not obligate the Government to issue a solicitation.

2.0 Classification.

The spectrum analyzer (SA) shall meet the requirements of the Performance Specification titled, “Test Equipment For Use With Electrical and Electronic Equipment, General Specification For,” MIL-PRF-28800F Class 2 as tailored by this Purchase Description.

3.0 OPERATIONAL REQUIREMENTS.

The specifications provided below are the minimum requirements and accuracies that will meet the Government’s need. The SA shall at least meet these requirements and accuracies and may provide better performance. When specified, N is the number of the harmonic component of the local oscillator.

3.1 Frequency Characteristics.

3.1.1 Range: 9 kHz to 26.5 GHz

3.1.2 Accuracy: ± [5% of the span + 15% of the Resolution

Bandwidth (RBW) + 50 Hertz (Hz) + (center frequency * 0.0000005)]

3.1.3 Internal Frequency Reference

3.1.3.1 Aging Rate: 1 ppm/year

3.1.3.2 Temperature Drift: [0°C to +30°C], [+30°C to +50°C]: 2 ppm + 2ppm/10°C

3.1.4 Readout Resolution: less than 1% of the selected span or 1 kHz, whichever is greater

3.1.5 Center Frequency Tuning Resolution: The greater of 0.1 divisions or less of the selected span, or 200 Hz

3.1.6 Signal Counter: Capable of counting signals within the specified frequency range

3.1.6.1 Accuracy: ± [(marker frequency * frequency reference accuracy) + (50 Hz * N) + 1 Least Significant Digit]

3.1.6.2 Resolution: Selectable from 1 Hz to 1 Megahertz (MHz)

3.1.7 Sweep

3.1.7.1 Time:

3.1.7.1.1 Zero span: At least from 1 milliseconds to 1,000 second (sec)

3.1.7.1.2 Non-zero span: At least from 20 millisecond (ms) to 1,000 sec or Sweep Acquisitions selectable from 1 to 5,000

3.1.7.2 Accuracy: ±20% of setting

3.1.8 Span: A mode shall be provided wherein the full specified frequency range for each band is displayed

3.1.8.1 Widths: 100 Hz – 26.5 GHz plus zero span (0 Hz)

3.1.8.2 Accuracy: ±5% of the span

3.1.8.3 Span to RBW Ratio: Total span to RBW ratio of at least 10:1 for any span setting up to 20 MHz; this may be accomplished by manual or automatic means

3.1.8.4 Modes: Horizontal axis in time and frequency; selectable from at least 100 Hz to 1 GHz, typically with seven ranges in a 1, 2, 5 sequence

3.1.9 RBW: Selectable from 10 Hz to 2 MHz

3.1.9.1 Accuracy: ±20% of the selected bandwidth; the 1 MHz bandwidth shall be within ±25% and the 100 Hz or less bandwidths shall be within ±30%

3.1.10 Shape Factor: 15:1 or less at the 3 decibels (dB) and 60 dB points

3.1.11 Video Filter: Selectable band-stop filters shall be provided within a frequency range of 3 Hz or less to at least 30 kHz

3.2 Amplitude Characteristics

3.2.1 Measurement Range: 0 – 65 dB in 5 dB steps

3.2.2 Dynamic Range: 80 dB at 10 dB/div, 16 dB at 2 dB/div, and eight divisions in the linear mode

3.2.2.1 Accuracy: ±2 dB at 10 dB/div, ±1.5 dB at 2 dB/div, and ±5% in the linear mode

3.2.3 Distortion:

3.2.3.1 Spurious Responses (with no signal input): -90 decibels-milliwatt (dBm) with no input signal applied from 200 kHz to 6.46 GHz, the response shall degrade to no worse than -70 dBm at 26.5GHz

3.2.3.2 Spurious Harmonic Distortion: at least 60 dB below the carrier for a signal input mixer level of -40 dBm or less up to 26.5GHz

3.2.3.3 Third Order Intercept: at least 70 dB below the carrier for a signal input mixer level of -30 dBm or less

3.2.4 Noise

3.2.4.1 Input Noise Sensitivity: -90 dBm or less when a 100 Hz resolution bandwidth and 0 dB attenuation are selected

3.2.5 Single Side Band Phase Noise (at F = 1GHz)

3.2.5.1 30kHz Offset: ≤ -85 dBc/Hz

3.2.5.2 100kHz Offset: ≤ -97 dBc/Hz

3.2.5.3 1MHz Offset: ≤ -107 dBc/Hz

3.2.6 DANL (normalized at a RBW of 1 Hz and a frequency of 2 MHz – 26.5 GHz): < -115 dBm

3.3 Trigger: internal, external, free run, and single sweep triggering modes

3.4 Digital Storage: Selectable modes that save maximum signal values and noise-average spectral displays

3.4.1 Function: Storing and displaying at least 4 spectrums including the readout measurement parameters

3.4.2 Batteries: If batteries are required for digital storage circuitry, they shall have a useful life of at least 12 months under normal operating conditions within the operating temperature range and be replaceable

3.5 Markers

3.5.1 Modes: Two independent markers that shall provide a readout of frequency and amplitude of any point along the displayed spectrum

3.5.1.1 Single Mode: One marker displays absolute frequency and amplitude

3.5.1.2 Delta Mode: Two markers display frequency and amplitude difference between the two markers

3.5.1.2.1 Resolution: 1% of span

3.5.1.2.2 Accuracy: 1% of span

3.6 Display

3.6.1 Screen: a high resolution color LCD display with an internal graticule of at least 8 vertical by 10 horizontal shall be provided; the screen shall be seen when used at night and direct sunlight in the field or outside environments

3.6.1.1 Keys: Any keys (soft or otherwise) shall be seen when used at night and direct sunlight in the field or outside environments

3.6.2 Vertical Display Modes: Log 10 dB/div, log 2 dB/div, and Linear

3.6.2.1 Input Attenuator Range: 0 dB to 30 dB

3.6.2.2 Attenuator accuracy: ±1.8 dB per 10 dB steps to a maximum of 3.5 dB

3.6.2.3 Reference Level Range: -117 dBm to 30 dBm for log modes and 2.24 uV to 7V in the linear mode; the reference level shall be adjustable in increments of 0.25 dB or less for the log mode and to one division or less in the linear mode

3.6.2.4 IF Gain Variation: ±1 dB maximum for any 10 dB change in the reference level between 0 and -80 dBm

3.6.3 Readout: The display shall provide a readout of center frequency, span or span/div, RBW, vertical scale factor, reference level, marker readout of frequency and amplitude, video filter selection, and Radio Frequency (RF) attenuation

3.7 Input and Output Connectors

3.7.1 RF Input:

3.7.1.1 Connector: Type K (3.5 millimeter)

3.7.1.2 Impedance: 50 ohms (Ω)

3.7.1.3 Voltage Standing Wave Ratio: with 10 dB or more input attenuation selected, the Voltage Standing Wave Ratio shall not to exceed 2.3:1 for the frequency range

3.7.1.4 Maximum: 25 dBm continuous and 75W peak for 1 ms with 20 dB or more attenuation selected NOTE: An adapter is acceptable.

3.7.2 Reference Input:

3.7.2.1 Connector: 50 Ω Bayonet Neill-Concelman (BNC) female

3.7.2.2 Frequency: 10 MHz

3.7.2.3 Amplitude: 0 dBm

3.7.3 Connections: The SA shall utilize a RG-58 coaxial cable, BNC connectors, antenna adapters, and Universal Serial Bus protocol to connect with supported systems

3.7.3.1 Physical Ports: Unnecessary or unused physical ports shall be eliminated, blocked, or plugged

3.8 Operating System: The operating system (OS) shall have non-essential capabilities disabled or be configurable only by privileged users to enable/disable non-essential capabilities

3.8.1 OS Version: The SA shall use a current operating system with all applicable security updates applied. Systems shall be maintained at a supported servicing level or release

3.8.2 Protocols and Services: All unnecessary or unused protocol/service ports shall be disabled; wherever possible, File Transfer Protocol (FTP) and Telnet shall be disabled

3.8.3 Wireless Access: Wireless access services (Wi-Fi, Bluetooth) shall not be enabled

3.8.4 Software Version: The software version delivered shall be the latest version of software installed at the time of delivery

3.8.5 Software / Firmware Upgradeability: The software / firmware shall be upgradeable to the latest versions available

3.9 Accessories: The SA shall have a Type K (3.5 mm) to Type N adapter.

4.0 General Requirements

4.1 Equipment Components: All sections of paragraph 3.2 of MIL-PRF-28800 are applicable except for paragraph 3.2.3.1 “Material restricted for Navy use”.

4.2 Design and Construction: All sections of paragraph 3.3 “Desire [sic] and Construction” of MIL-PRF-28800F are applicable.

4.2.1 Tailoring: The self-test capability of the analyzer shall be the same as that normally offered with tis commercial model.

4.3 Power: The SA shall operate on both Direct Current (DC) and Alternating Current (AC) power.

4.3.1 Internal DC Battery: The equipment shall be operational with a rechargeable, internal DC battery

4.3.1.1 Battery Indicator: A low battery indicator shall be provided on the display.

4.3.1.2 Minimum Operating Time: at least 3 hours

4.3.1.3 Maximum Recharging Time: 4 hours.

4.3.1.4 Charger: 110/220 + 10% Volt at 50/60 Hz single phase shall be provided. The equipment shall be operational while being charged.

4.3.1.5 Quantity: 2 batteries shall be provided.

4.3.1.6 Shelf Life: stored for up to 6 months with no deterioration of performance.

4.3.2 Electrical Power Source: Operate within each required range without changing manually operated devices such as tapped transformers (variable setting transformers) and other similar devices for compensation. All selectable power setting controls shall be externally accessible.

4.3.2.1 Power Consumption: Maximum power shall be 250 Watts

4.3.2.2 Nominal and Alternate Power Source: Operate at 115 Root Mean Squared Voltage (Vrms) single-phase 50 Hz and 60 Hz source (see Table 1). The equipment shall also be capable of operating at an alternate power source requirement of 230 Vrms single-phase 50 Hz and 60 Hz.

Table 1: Power Sources.

Voltage (Vrms)

126.5 to 149.5 0 to 80.5

253 to 299 0 to 161

Frequency (Hz)

52.5 to 57 0 to 45

63 to 66 0 to 54

4.3.2.3 Steady-State Conditions: The performance and accuracy of the analyzer shall not be adversely affected with operated under any combination of the subparagraphs below. Tolerance values are derived from, and referenced to, the nominal values specified for voltage and frequency.

4.3.2.3.1 Voltage Tolerance: ±10%

4.3.2.3.2 Frequency Tolerance: ±5%

4.3.2.3.3 Waveform Deviations:

4.3.2.3.3.1 Deviation Factor: < ±10%

4.3.2.3.3.2 Total Harmonics: < ±10%

4.3.2.3.3.3 Individual Harmonics: < ±5%

4.3.2.3.3.4 Crest Factor: 1.27 to 1.56

4.3.2.4 Transient-State Conditions: Recover to within the steady-state tolerance band within 500 ms. The equipment performance may be impaired during the transient. Transient values are derived from, and referenced to, the nominal values specified for voltage and frequency.

4.3.2.4.1 Voltage Transients: Within the range of (10% to (30% shall not cause the operation of the equipment to be impaired for longer than 30 seconds following the transient and not cause loss of information stored in a volatile memory. Testing shall be in accordance with 4.5.5.6.3 of MIL-PRF-28800.

4.3.2.4.2 Frequency Transients: Within the range of (5% to (10% shall not cause the operation of the equipment to be impaired for longer than 30 seconds following the transient and not cause loss of information stored in a volatile memory. Testing shall be in accordance with 4.5.5.6.4 of MIL-PRF-28800.

4.3.2.5 Interruption of Power Source: Voltage or frequency interruptions shall not cause damage to the equipment. A power source interruption is when the voltage falls in the range of 0 to 70% of nominal or frequency falls in the range of 0 to 90% of nominal. Equipment performance is not required during interruption of the power source. After power interruptions of any duration, the equipment shall automatically resume operation at either the last operating condition before interruption, or a default power-up condition.

4.3.2.6 Alternate Single-Phase Source: When the equipment is operated from a 230 Vrms nominal, the tolerance and times of the steady-state, transient-state, and interruption of power source requirements shall apply to the alternate power source.

4.3.2.7 Internal DC Power Source: If batteries are provided for memory retention of constants, they shall have a useful life of at least 12 months under normal operating conditions within the operating temperature range.

4.4 Electrical Power Connections: operate with a ground at the primary power source on either or neither side of the single phase input power line.

4.4.1 Input Power Cable: shall be a detachable power cable normally provided by the manufacturer.

4.4.2 Input Power Switch: the operator shall be able to energize the SA while positioned in front of the SA.

4.4.3 Indicators: Visual indication shall be provided on the front panel to indicate when the SA is energized.

4.4.4 Excessive Current Drain Protection: Automated safety mechanisms shall be incorporated to automatically disconnect the equipment in the event of current being drawn that is in excess of the equipment rating. No degradation of specifications or accuracy shall occur due to overload or short circuit conditions. Normal operation shall be restored after overload interruption without requiring the use of tools. The mechanism shall be mounted on either the front panel or the rear panel and be resettable or replaceable by the operator without the use of tools or disassembly.

4.4.4.1 Fuses: If fuses are used as the safety mechanism the following will apply:

4.4.4.1.1 Holders: Common or separate fuse holders may be provided. If only one fuse holder is used (common), the equipment shall be provided with the 115 Volts Alternate Current (VAC) fuse installed and the 230 VAC fuse shall be stowed with the accessories.

4.4.4.1.2 Availability: The fuses shall be standard fuses available through commercial sources.

4.4.4.1.3 Rating Marking: The fuse rating shall be indicated near or on the fuse holder.

4.4.4.1.4 Quantity: Two of each fuse that is required for complete operation, besides that installed in the equipment fuse holder, will be over-packed with the unit when delivered.

4.5 Operation:

4.5.1 Cold Weather Operation: Operators and maintainers wearing Army issue cold weather equipment, as defined in FM 31-70, can use the controls and perform the functions required to operate the SA.

4.5.2 Nuclear, Biological, and Chemical Operation: Operators and maintainers wearing Army issue Nuclear, Biological, and Chemical (NBC) Mission Oriented Protective Posture (MOPP), Level 2 equipment, as defined in FM 3-11.4, Table IV-6 “MOPP Level 2”, can use the controls and perform the functions required to operate the SA.

4.5.3 Nuclear, Biological, and Chemical Storage: An operator and maintainer can properly shutdown and store the SA while wearing their field duty uniform and Army issue NBC MOPP, Level 4 equipment, as defined in FM 3-11.4, Table IV-6 “MOPP Level 4.”

4.6 Enclosure Physical Characteristics: shall be in accordance with (IAW) all sections of MIL-PRF-28800F, paragraph 3.6 “Enclosure physical characteristics”, as tailored below:

4.6.1 Dimensions: shall have the dimensions to support hand held operational use.

4.6.2 Weight: The SA shall weigh a maximum of 9 pounds. The loaded transit case shall weigh a maximum of 35 pounds.

4.6.3 Mechanical Stability: shall be IAW all sections of MIL-PRF-28800F, paragraph 3.6.3 “Mechanical stability.”

4.7 Transit Case: IAW all sections of MIL-PRF-28800F, paragraph 3.7 “Transit case,” as tailored below.

4.7.1 Transit Case: Watertight, airtight hard transit case that provides protection for the contained test equipment, accessories, and over-packed items from the environmental requirements.

4.7.2 Cover: Open quickly via the use of fasteners attached to the transit case with hinges.

4.7.3 Stacking Provisions: Stacking without harm to the enclosure or its contents with a minimum stacking height of 6 transit cases.

4.7.4 Pressure Equalizing Valve: Mechanism for equalizing air pressure within the enclosure, when the enclosure is sealed. The mechanism provided shall not protrude beyond the transit case enclosure.

4.7.5 Color: Neutral in color (e.g. desert tan, olive green, black), excluding white.

4.8 Environmental: The SA shall conform to all sections of paragraph 3.8 of MIL-PRF-28800F, paragraph 3.8 “Environmental requirements” for Class 2 equipment as tailored below:

4.8.1 Environmental Conditions: paragraph 3.8.1 Environmental conditions is applicable except with a 30-minute warm-up time.

4.8.2 Temperature and Humidity: paragraph 3.8.2 “Temperature and humidity” is applicable except that the operating temperature range is 0 degrees Celsius (°C) to 55°C.

4.8.3 Altitude: paragraph 3.8.3 “Altitude” is applicable for both operating and non-operating altitude.

4.8.4 Vibration Limits: Both random (paragraph 3.8.4.1 “Vibration, random” and sinusoidal (paragraph 3.8.4.2 “Vibration, sinusoidal”) are applicable. Bounce, loose cargo is not applicable.

4.8.5 Shock, Mechanical: paragraph 3.8.5 “Shock, mechanical” is applicable except for shock, high impact.

4.8.6 Water Resistance: paragraph 3.8.6 “Water resistance” is not applicable except for paragraph 3.8.6.1.3 “Watertight, air tight transit case” for the transit case and paragraph 3.8.6.3 “Dripproof” for the SA.

4.8.7 Fungus Resistance: paragraph 3.8.7 “Fungus resistance” is applicable; however, test IAW MIL-STD-810H “Environmental Engineering Considerations and Laboratory Tests”, dated 31 Jan 2019, Method 508.8. The test items are the SA, the transit case (interior and exterior), all accessories, labels, and adhesives. Guidance for determining the extent of growth is shown in Table 508.8-II of MIL-STD-810H.

4.8.8 Salt Atmosphere: paragraph 3.8.8 “Salt atmosphere” is not applicable.

4.8.9 Explosive Atmosphere: paragraph 3.8.9 “Explosive atmosphere, Class 1” is not applicable.

4.8.10 Dust Exposure: paragraph 3.8.10 “Dust exposure, Class 1 and hard transit cases” is applicable for the transit case.

4.8.11 Magnetic Environment: paragraph 3.8.11 “Magnetic environment, DC field (Navy)” is not applicable.

4.8.12 Acoustic Noise: paragraph 3.8.12 “Acoustic noise” is applicable.

4.8.13 Solar radiation: paragraph 3.8.13 Solar radiation is applicable.

4.9 Electromagnetic Compatibility: paragraph 3.9 is applicable; however, the requirements shall be exposure to conducted emissions, conducted immunity, radiated emissions, radiated immunity, and electrostatic discharge immunity while in operation. These requirements shall be verified by testing IAW Table 3, below.

Table 3: Electromagnetic Compatibility Tests.

4.10 Safety: MIL-STD-28800F, paragraph 3.10 “Safety” is applicable. The SA shall meet the safety requirements IAW IEC 61010, as applicable.

4.11 Calibration: The following shall be used instead of MIL-PRF-28800, paragraph 3.12 “Calibration interval”.

4.11.1 Ease of Access, Adjustment, and Removal: The SA shall have easy access to the interior parts, terminals, and wiring for adjustments, and required circuit checking. Adjustments must not require the removal of any component, printed circuit card, or subassembly excluding installing extender boards. Printed circuit cards must be removable without the need to unsolder cables and interconnecting wiring. Printed circuit cards (mother boards) designed primarily to distribute power and signals to other printed cards (daughter boards) are excluded from this requirement. When such motherboards are used, they shall be accessible from both sides. Unsoldering of wires, wire harnesses, parts or subassemblies shall not be required in order to gain access to terminals, soldered connections, mounting screws and the like for calibration purposes. The use of extender cards or cables is permitted.

4.11.2 Variable Value Adjustments: Calibration shall be provided for by variable value components adjustable by means of means of tools contained in the SC 5180-91-R63 tool kit, by variable parameters stored in non-volatile memory, or by other simple means.

4.11.3 Calibration by Substitution: The calibration of a unit by substitution of selected components or parts is unacceptable.

4.11.4 Calibration Interval: shall maintain tolerance specifications for no less than 360 days.

4.11.5 Calibration Time: Calibration shall have a Mean Time To Calibrate that does not exceed nine (9) hours for a manual calibration and five (5) hours for an automated calibration. Calibration time does not include the time to repair and re-adjust the equipment because of malfunction.

4.12 Reliability: MIL-STD-28800F, paragraph 3.13 “Reliability” is applicable with 2,700 hours of Mean Time Between Essential Function Failure. The Median Time to Repair for all Unscheduled Maintenance Demands (UMDs) at the field level shall not exceed 1.5 hours. The Maximum Time to Repair shall not exceed 2 hours for 90% of all UMDs at field level.

4.13 Maintainability: The analyzer maintainability characteristics shall be according to all sections of paragraph 3.14 of MIL-PRF-28800 as tailored below:

4.13.1 Fault Isolation: MIL-STD-28800F, paragraph 3.14.1 “Fault isolation” is applicable except permit isolation of faults and repair down to the board level.

4.13.2 Preventive Maintenance: MIL-PRF-28800, paragraph 3.14.2 “Preventive maintenance” is applicable.

4.13.3 Maintenance Provisions: MIL-PRF-28800F, paragraph 3.14.3 “Maintenance provisions” is applicable.

4.13.4 Washability: MIL-PRF-28800F, paragraph 3.14.4 “Washability” is not applicable.

4.14 Environment Stress Screening: MIL-PRF-28800, paragraph 3.15 “Environmental stress screening (Applicable to Class 1 ONLY)” is not applicable.

5.0 ACRONYMS.

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